Axalta added Voltatex 4224 to its Energy Solutions portfolio last year.

After 12 months of global use in a variety of industrial applications, Axalta said its feedback on Voltatex 4224 from its customers has been outstanding.

“Using Voltatex 4224 at Siemens has led to a significant reduction in the operating temperature of water-cooled motors. This low-emission impregnating resin is just as easy to apply as conventional impregnating agents,” said Thomas Werbinek, head of R&D Servomotors, Siemens, Bad Neustadt, Germany.

“Voltatex 4224 improves the heat transfer from the copper winding to the steel core,” said Michael Glomp, Axalta’s global VP for Energy Solutions. “This leads to less thermal stress in a motors’ components, reducing the operating temperature by up to 300C or the size of the motor by more than 15%. And the design of smaller and more efficient motors leads to a reduction in the use of metal resources, which is very much in line with Axalta’s environmental sustainability goals.”

Added Joachim Klötgen, head of Automatic Impregnation Systems, Meier Prozesstechnik, Bocholt, Germany: “When using Voltatex 4224, Meier Prozesstechnik has shown that it can be applied using conventional impregnation technologies such as trickling, dipping and rolling. It is, therefore, possible to use the same system technology without incurring any problems.”

Voltatex 4224 at a glance
Available globally, this low-emission impregnating resin allows for the design of smaller and more efficient motors, and the significant reduction of the operating temperatures of standard design motors. Compared to most standard impregnating resins, Voltatex 4224 has a thermal conductivity that is more than double – 0.5 to 1.2 W/mK. Also, Voltatex 4224 is manufactured using renewable raw materials.

Voltatex 4224 is available in three viscosity adjustments – low, medium and high – and it can be applied using conventional impregnation technologies such as trickling, dripping and rolling. It is styrene- and vinyl toluene-free impregnating resin, which means that emissions are reduced to a minimum to create a better working environment and limit flammability as well as emissions exposure.

In November 2019, Axalta received the R&D 100 Award for Voltatex 4224.